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Table 5 PedsQL™ 4.0 Generic Core Scales Social Functioning Scale Score: Child Self-Report Reliability and Validity

From: How young can children reliably and validly self-report their health-related quality of life?: An analysis of 8,591 children across age subgroups with the PedsQL™ 4.0 Generic Core Scales

Age

Reliability

Validity

   

Chronic Health Condition

Healthy Sample

  
 

n

α

Mean

SD

% Floor

% Ceiling

Mean

SD

% Floor

% Ceiling

Chronic vs. Healthy Difference

Chronic vs. Healthy Effect Size

5 yrs

749

0.68

74.13

19.31

0.6

15.5

83.39

16.82

0.0

34.8

9.26*

0.55

6 yrs

925

0.68

75.87

20.29

0.0

22.2

81.06

17.73

0.1

29.8

5.19*

0.29

7 yrs

885

0.71

69.58

22.10

1.6

13.4

80.25

18.02

0.0

27.7

10.67*

0.59

8 yrs

876

0.74

78.72

18.65

0.4

19.4

85.00

16.58

0.0

34.1

6.28*

0.38

9 yrs

837

0.79

77.21

20.73

0.0

20.1

84.16

18.54

0.2

36.0

6.96*

0.38

10 yrs

837

0.77

80.08

20.36

0.4

26.1

85.47

16.84

0.0

35.4

5.39*

0.32

11 yrs

680

0.80

80.47

19.65

0.0

25.4

88.53

14.99

0.0

43.6

8.06*

0.54

12 yrs

679

0.78

81.78

19.75

0.0

27.9

87.27

15.47

0.0

37.3

5.48*

0.35

13 yrs

612

0.81

81.32

18.25

0.0

25.9

86.84

16.47

0.0

40.8

5.52*

0.34

14 yrs

571

0.83

78.88

21.53

0.8

25.9

89.82

14.65

0.0

49.2

10.94*

0.75

15 yrs

562

0.81

82.99

17.59

0.0

30.0

89.06

14.49

0.0

45.7

6.07*

0.42

16 yrs

331

0.77

83.37

17.69

0.0

27.0

90.29

12.63

0.0

46.8

6.92*

0.55

  1. Note: Total N = 8,544 for reliability, Total N = 8,308 for validity.
  2. Higher values equal better health-related quality of life.
  3. % Floor/Ceiling = the percentage of scores at the extremes of the scaling range.
  4. Effect sizes are designated as small (.20), medium (.50), and large (.80).
  5. *p < .001 (independent samples t-test).